Evaluation Of Imaging Quality Of Polarization Imaging System

Compared with the traditional optical imaging system,the special feature of polarization imaging system is that the imaging results contain polarization information that can not be provided by the traditional imaging system.It is precisely because of the existence of polarization information that polarization imaging systems can effectively identify and detect targets that are difficult to detect by traditional imaging methods and targets vulnerable to clutter background information.In recent years,polarization imaging technology has made rapid development,and the requirements of imaging quality of polarization imaging system are becoming more and more stringent.Therefore,the accurate evaluation and optimization of the imaging performance of the polarization imaging system is a major research hotspot at home and abroad.On another thing,as a method of imaging performance of polarization imaging system,optical transfer matrix has the advantages of higher objectivity,higher reliability and wider range of optical systems,which opens up a new situation for the evaluation of imaging quality of polarization imaging system.This article will study the imaging quality of the polarization imaging system based on the optical transfer matrix method.Firstly,the principle of polarization imaging system and the theory of optical transfer matrix are introduced,and the solution scheme of optical transfer matrix based on correlation operation is determined.The polarization imaging system consisting of a quarter-wave plate and an imaging lens is studied.In this paper,the aberration in the system is the seven kinds of aberration caused by the lens:longitudinal defocus,transverse defocus,aberration,field curvature,spherical aberration,aberration and distortion.Based on the theory of optical transfer matrix and aberration,the polarization aberration matrix of polarization imaging system with seven kinds of aberration is determined.Secondly,based on the obtained polarization aberration matrix of the polarization imaging system,the procedure of solving the optical transfer matrix is written,and the results of the optical transfer matrix of the polarization imaging system with different f-number,different kinds of aberrations,and the same kind but different degrees of aberrations are simulated using MATLAB software.And the results are compared with those obtained for the polarization imaging system without aberrations.The correspondence between the aberrations of the polarization imaging system and the image of the optical transfer matrix is obtained.Further,the software for characterizing the aberration of the polarization imaging system is designed by MATLAB software,which aims to simplify the operation,facilitate the user's operation,and also facilitate the further study of the aberration of the polarization imaging system.Finally,to verify the correctness of the optical transfer matrix to evaluate the imaging quality of the polarization imaging system,the imaging performance of the vortex half-wave delay was investigated using the optical transfer matrix method.The optical transfer matrix of the vortex half-wave delay was theoretically investigated for different parameters,and a comparative analysis of the obtained results led to the conclusion that the vortex half-wave delay can achieve super-resolution imaging of the polarization imaging system.